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To see the logs follow the next steps:
Click on Apps on the navigation bar.
Click on Manage your apps.
Find a Smart Issue Templates item in the left sidebar and click it
Select the History item in the left sidebar
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Here all main actions (Create, Update, Delete) will be shown for the Templates, Scopes, Hierarchies, Variables, and Templates.
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Logs history usually is cleaned by itself after the storage is full - the old data will be rewritten by the new one. But there is a way to delete this data manually:
Click the Clean
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Logs button
Select the options you need
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Click the Delete button